Fix spurious error on accessing fd1

Cherry picked from Linux kernel commit 76c25284e0d845bff4ee1031721556148af4db1c

* linux/dev/drivers/block/floppy.c (config_types): Clear from
`allowed_drive_mask' floppy drives whose cmos type is 0.

1 files changed, 2 insertions, 0 deletions

diff --git a/linux/dev/drivers/block/floppy.c b/linux/dev/drivers/block/floppy.c
index 83943ee1..4c0977a3 100644
--- a/linux/dev/drivers/block/floppy.c
+++ b/linux/dev/drivers/block/floppy.c
@@ -3492,6 +3492,8 @@ static void config_types(void)
 				printk("fd%d is unknown type %d",drive,
 				       UDP->cmos);
 		}
+			else
+				allowed_drive_mask &= ~(1 << drive);
 	}
 	if (!first)
 		printk("\n");